package com.maoshi.shop.mp.comment.uril;

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class HttpGetUtil {

    public static String httpRequestToString(String url,
        Map<String,String> params) {
        String result = null;
        try {
            InputStream is = httpRequestToStream(url,  params);
            BufferedReader in = new BufferedReader(new InputStreamReader(is,
                    "UTF-8"));
            StringBuffer buffer = new StringBuffer();
            String line = "";
            while ((line = in.readLine()) != null) {
                buffer.append(line);
            }
            result = buffer.toString();
        } catch (Exception e) {
            return null;
        }
        return result;
    }

    private static InputStream httpRequestToStream(String url,
                                                   Map<String, String> params) {
        InputStream is = null;
        try {
            String parameters = "";
            boolean hasParams = false;
            for(String key : params.keySet()){
                String value = URLEncoder.encode(params.get(key), "UTF-8");
                parameters += key +"="+ value +"&";
                hasParams = true;
            }
            if(hasParams){
                parameters = parameters.substring(0, parameters.length()-1);
            }


            url += "?"+ parameters;

            URL u = new URL(url);
            HttpURLConnection conn = (HttpURLConnection) u.openConnection();
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("Accept-Charset", "UTF-8");
            conn.setRequestProperty("contentType", "utf-8");
            conn.setConnectTimeout(50000);
            conn.setReadTimeout(50000);
            conn.setDoInput(true);
            //设置请求方式，默认为GET
            conn.setRequestMethod("GET");


            is = conn.getInputStream();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return is;
    }

    public static JSONObject doPostReJSON(String url, Map<String, Object> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        JSONObject json = null;
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<NameValuePair>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, String.valueOf(param.get(key))));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            HttpEntity responseContent = response.getEntity();
            json = JSONObject.parseObject(EntityUtils.toString(responseContent));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return json;
    }

    public static String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }


}
